Forget popular pills. Sunbathing can boost a man's sex drive, says a new study.
Researchers at Medical University of Graz in Austria have carried out the study and found that the levels of the male sex hormone testosterone in men's blood rise accordingly with doses of Vitamin D.
Vitamin D is a vital nutrient produced in the body after exposure to sunlight and contained in fish and meat.
In their study, the researchers found that men with more Vitamin D per millilitre of blood had much more of the main male sexual hormone circulating than those with less, the British media reported.
The average amount of testosterone over the course of the year was subject to the same fluctuations as the vitamin D level. Both decrease from October - at the beginning of the winter months and reach their lowest level in March because of the weaker solar radiation during this period.
Ad Brand, spokesman of the Sunlight Research Forum in Veldhoven in the Netherlands, said: "Men who ensure their body is at least sufficiently supplied with vitamin D are doing good for their testosterone levels and their libido among other things."
The new findings back up previous research that found an hour of sunshine can boost a man's testosterone level by up to 69 per cent.
Testosterone is the most important male sexual hormone. In males it is mainly responsible for the development of the sex organs, the formation and maintenance of typical male sexual characteristics, sperm production as well as the controlling of male desire.